Back to results
US 8,262,743 B2Granted
Optical brighteners and compositions comprising the same
AssigneeMilliken & Company
InventorsEduardo Torres, Robert L. Mahaffey, Dominick J. Valenti, Patrick D. Moore, Leland G. Close, Jr.
Life of this patent
Estimating the term…
Abstract
Novel compounds based on distyryl-biphenyl are provided. The compounds conform to the general structure The compounds are useful as optical brighteners. Compositions, such as laundry care compositions, containing such compounds are also provided.
Claims10
A compound conforming to the structure of Formula (I):
- wherein R1 is carbonyl or sulfonyl;
- R3 is a substituent selected from the group consisting of —OR4, —NHR4, and —NR4R4;
- wherein R4 is selected from the group consisting of —R5—O—R6—R7 and —R6—R7;
- R5 is alkyl or aryl;
- R7 is hydrogen or alkyl;
- and R6 is a divalent substituent selected from the group consisting of
- divalent oligomeric substituents comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (V)
- wherein R20 and R21 are independently selected from the group consisting of hydrogen, alkyl, hydroxyalkyl, aryl, alkoxyalkyl, and aryloxyalkyl.
5 more elements
Dependencies are inferred from the claim text.